Electric mixer



- Nov. 5, 1957 A. C. DE ANGELIS ETAL ELECTRIC MIXER Filed Sept. 15, 1955 4 Sheets-Sheet 1 ATTORNEY 1957 A. c. DE ANGELIS ET AL 6 7 ELECTRIC MIXER Filed Sept. 15, 1955 4 Sheets-Sheet 2 INVENTORS Angelo CDeAn/gelis Q liarlzyliflwiterfield, r/r: I

ATTORNEY N 5, 1957 A. c. DE ANGELIS ETAL 2, 12,1

v ELECTRIC MIXER Filed Sept. 15, 1955 4 Sheets-Sheet 3 20 a INVENTORS Angelo afieflnyelis Harry EBuiierfield, /n

BY W

ATTORNEY Nov. 5, 1957 A. c. DE ANGELIS ET AL 2, 12 1 ELECTRIC MIXER Filed Sept. 15, 1955 4 Sheets-Sheet 4 INVENTORS ATTORNEY ijnited States Patent ELECTRIC MIXER Angelo C, DeAngelis, Fair Haven, and Harry E. Butterfield, Jr., Maplewood, N. J., assignors, by mesne assignments, to Standard Electronics Corporation, Newark, N. J., a corporation of Delaware Application September 15, 1955, Serial No. 534,499

6 Claims. (Cl. 259-135) manufacture and durability in use.

More specifically, it is an object of the invention to provide an improved motor mounting means whereby the motor is securely supported yet is readily accessible for repair or replacement when necessary.

Another particular object of the invention is to provide improved beater blade ejecting means which is composed of a minimum number of parts and which may be conveniently manipulated for releasing the beater blades from their support in driving connection with the motor for washing or cleaning.

A further particular object of the invention is to provide novel supporting means for the mixer whereby the body portion thereof may be supported on the edges of bowls or the like of various diameters in which the mixing operation is being performed. The invention also contemplates the provision of novel side supporting means which enables the mixer to rest upon the surface of a table or the like with the beater blades elevated over a plate or other receptacle for catching material dripping from the blades.

Other objects and advantages of the invention will be apparent from the following detailed explanation taken in conjunction with the accompanying drawings wherein a preferred embodiment of the principles of the invention has been selected for exemplification.

In the drawings:

Fig. l is a side elevational view of a device constructed in accordance With the invention shown as supported on the edge of a bowl which is indicated in section and illustrating in broken lines the manner in which the device may be supported on bowls of various diameters;

Fig. 2 is a front elevational view of the device as resting on the surface of a table or the like and illustrating the manner in which the side supporting surfaces elevate the beater blades over a drip catching receptacle;

Fig. 3 is an enlarged side elevational view of the device partly in section to show the motor supporting construction and the beater releasing means;

Fig. 4 is a top plan view of the device with the top housing removed;

Fig. 5 is a sectional view taken on the line 5-5 of Fig. 3 looking in the direction of the arrows;

Fig. 6 is a sectional view taken substantially on the line 6-6 of Fig. 5 looking in the direction of the arrows;

Fig. 7 is a sectional view taken on the line 7-7 of Fig. 5 looking in the direction of the arrows;

Fig. 8 is a fragmentary side elevational view of the beater shaft;

Fig. 9 is a fragmentary bottom view of the bottom rear end portion of the device;

Fig. 10 is a fragmentary view looking from the rear of the bottom housing;

Fig. 11 is a fragmentary enlarged detailed sectional view taken on the line 11-11 of Fig. 9 looking in the direction of the arrows;

Fig. 12 is a top. plan view of the bowl rest as shown in bottom plan in Fig. 9; and

Fig. 13 is a vertical sectional view taken on the line 13-13 of Fig. 12 looking in the direction of the arrows.

Referring more particularly to, the drawings, wherein like designations refer to like parts, the device in its essentials is composed of a top housing 10 including an integral handle 12 which may, if desired, be molded from any suitable plastic material. As shown in Figs. 1 and 3, the handle 12 slopes rearwardly and downwardly at a convenient angle for grasping by the user. The bottom housing 14 is preferably cast of metal and the two housings are detachably secured together by screws or the like 16. The beater means may be of conventional construction and includes blade portions 18 and a shaft 20 rotatably supported in the bottom housing as will hereinafter be described.

The electric motor designated in its entirety at M may also be of conventional construction and includes a shaft 22 having a driving worm 24 at its forward end. A fan 25 and a forward thrust Washer 28 are provided and the, rearward end of the shaft bears against thrust ball 26. Motor shaft bearings 39 are provided and, for supporting the motor M in its entirety within the bottom housing 14, upright members in the form of saddle blocks 32 and intermediate pillars 33 extend upwardly of the bottom of the housing to form supports for the shaft bearings 30 and field assembly, respectively. The pillars 33 may be notched at their upper ends for centering as well as supporting the field assembly around the motor armature. The saddle blocks 32 may include suitable felt wicks or the like 34 as best shown in Fig. 3. A suitable cover plate 36 for the motor M may be secured to upwardly projecting posts in the bottom housing 14 by screws or the like 38. As a feature thereof, the cover plate 36 at the points thereof which overlie the motor shaft bearings 30 is provided with ribs 40 which urge the shaft bearings 30 into firm seating engagement with the supporting saddle blocks 32 and wicks 34 and with intermediate ribs 41 which secure the field assembly.

The worm 24 of the motor drive shaft 22, as best shown in Fig. 5, is in driving engagement with opposed gears 42 which may be pressed on vertical hollow gear shafts 44 having split bottom extremities for reception of the upper ends of the beater shafts 20. The split ends of the shafts 44 carry annular snap rings 46 beyond which projecting lugs 48 on the upper end of the beater shafts 20 may be thrust so that the keyed portions 50 of the beater shafts are in driven engagement with the gear shafts or driving barrels 44. Plate 51 retains packing grease around the worm and gear assembly. The upper extremities 52 of the shaft 20 project upwardly through and above the hollow shafts 44, as shown.

For ejecting the beater shafts 20 from their support within the bottom housing 14 as above described, a beater release lever 54 is provided which is pivotally supported on a roll pin 56 which in turn is supported by upright posts extending upwardly of the bottom housing 14. As shown, the beater release lever 54 includes an integral yoke arm 58 which bears against the upper projecting ends 52 of the beater shafts 20 and an integral upright arm 60 provided with a thrust button 62 which, as shown, is accessible from the front exterior of the top housing. The release lever 54 is normally held in the position shown in Fig. 3 and in solid lines in Fig. 6 by the spring 64 and, as will be apparent from the broken line positions shown in Fig. 6, when the button 62 is pressed inwardly the arm 58 will thrust the lugs 48 of the shafts 20 downwardly of the locking rings 46 whereby to eject the beater assemblies from the housing. It will also be apparent, particularly from Figs. 7 and 8, that the lugs 48 are of arcuate configuration such as to exert a cam action against the surrounding rings 46 as the lugs are pushed past the rings. Thus, the rings 46 act as injector and ejector springs abruptly to snap the shafts 26 in looking driven engagement with the driving barrels 44 as the lugs are pushed upwardly past the rings and abruptly to release the shafts as the lugs are urged downwardly past the rings. The latter function is particularly important since it enables the shafts to be spring ejected from the housing 14 in contrast with mere gravity fall.

The bowl support 66 may be a separable member formed preferably of any suitable resilient and/ or friction material. Lugs 68 may be provided on the upper face of the member 66 for projection through apertures in the bottom wall portion of the housing 14 for securing the bowl supporting member in position. The lower skirt portion is provided with a series of grooves or notches 76 along the length thereof, as shown, for selective resting engagement with the edge portion of a mixing bowl indicated at B which, as will be apparent from Fig. 1, may be of a wide range of sizes or diameters.

As a further feature, the mixer device is adapted to rest upon a horizontal table top or the like in such a manner that the beater blades 18 are elevated so that a pan or the like may be placed under them for reception of dripping material. To this end, the bottom housing 14 is provided with outwardly and downwardly flared side walls 72 and the top housing 10 is provided with substantially aligned outwardly flaring side walls 74, the aligned pairs of side walls forming an angular side supporting surface for the device whereby the beater blades 18 remain tilted upwardly.

For the operation of the device, a cord or conduit 76 is provided for connection with an outlet for a source of electric current and multi-speed switch means indicated in its entirety at 78 is preferably provided such as shown, for example, in Patent No. 2,707,741 or 2,708,227. Such a switch is preferably mounted in the forward portion of the handle 12 in the manner claimed in Patent No. 2,719,238, dated September 27, 1955. Cooling of the motor M is provided by air drawn by the fan 25 through the rearward intake ports 82 provided in the bottom housing 14 and exhausted after traversing the motor M through the forward reticulated plate 80.

It is to be understood that the specific construction and arrangements of parts herein illustrated and described are for exemplary purposes only and that the principles of the invention embrace all such variations and modifications thereof as come within the scope of the following claims.

What is claimed is:

1. In an electric motor driven portable mixer including a motor, a housing therefor and motor driven beater means depending from said housing, the improvement which comprises, a bottom member for said housing, a plurality of stepped transverse notches carried by said member to provide rests for said housing upon an edge portion of bowls having varying diameters and higher edge portions as their diameters increase, an upright handle for said housing and outwardly and downwardly sloped side wall portions carried by said handle and housing, adjacent side wall portions being substantially aligned whereby when the mixer is laterally supported by said aligned side wall portions the beater elements of said beater means are elevated above said lateral support.

2. In an electric motor driven portable mixer including a motor, a housing therefor and motor driven beater means depending from said housing, the improvement which comprises, an inclined bottom member for said housing, and a plurality of stepped transverse notches carried by said member to provide rests for said housing upon an edge portion of bowls having varying diameters and higher edge portions as their diameters increase.

3. In an electric motor driven portable mixer including a motor, a housing therefor and motor driven beater means depending from said housing, the improvement which comprises, a handle carried upwardly of said housing and sloping at an angle rearwardly and down wardly of the mixer, the said handle having outwardly and downwardly sloped side wall portions and the said housing having substantially aligned outwardly and downwardly sloped side wall portions whereby when the mixer is laterally supported by said aligned side wall portions the beater elements are elevated above said lateral support and a plurality of stepped transverse means carried by the bottom portion of said housing whereby to provide rests for the mixer upon an edge portion having bowls of varying diameters and higher edge portions as their diameters increase.

4. In an electric motor driven portable mixer including a motor, a housing therefor and motor driven beater means depending from one end of said housing, the hu provernent which comprises, a plurality of upwardly and rearwardly stepped notches carried by the bottom of the other end of said housing to provide rests for said housing upon an edge portion of bowls having varying diameters and higher edge portions as their diameters increase.

5. In an electric motor driven portable mixer including a motor, a housing therefor and motor driven beater means depending from one end of said housing, the improvement which comprises, a resilient bottom member for the other end of said housing and a plurality of upwardly and rearwardly spaced bowl edge engaging means carried by said member to provide rests for said housing upon an edge portion of bowls having varying diameters and higher edge portions as their diameters increase.

6. In an electric motor driven portable mixer including a motor, a housing therefor and motor driven beater means depending from said housing, the improvement which comprises, an inclined bottom member for said housing, and a plurality of stepped transverse notches carried by said member to provide rests for said housing upon an edge portion of bowls having varying diameters and higher edge portions as their diameters increase, the said notches having an upright wall for engaging an inner face portion of the bowl and a lateral wall for engaging the upper edge of the bowl.

References Cited in the file of this patent UNITED STATES PATENTS 1,982,254 Iuengling Nov. 27, 1934 2,285,816 Jordan June 9, 1942 2,469,932 Ritter May 10, 1949 2,483,727 Frisbie Oct. 4, 194-9 2,515,755 Krause July 18, 1950 2,566,907 Robertson Sept. 4, 1951 2,707,623 Schwaneke May 3, 1955 2,737,371 Gerry Mar. 6, 1956 2,745,644 Von Behren May 15, 1956 2,753,472 Schott July 3, 1956 

